Vulnerability in Kernel: ice_ptp_release() Function
Summary
GSD-2021-1002135: ice: check whether PTP is initialized in ice_ptp_release(). Affects Kernel versions >= 46720ac66c21bf85e08823664b7b314b85e43f26, < 63a97a9f95f26fb64c72087bfbdce767f69929e6. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that provides essential services and interfaces between hardware and software. It manages system resources, facilitates communication between processes, and controls device drivers. The ice_ptp_release() function is part of the Kernel's ice driver, which handles network connectivity for Intel Ethernet devices. This vulnerability affects the ice_ptp_release() function in the Kernel, specifically when it fails to check whether Precision Time Protocol (PTP) is initialized before releasing resources. PTP is a protocol used for synchronizing clocks in a network. By not properly checking the initialization of PTP, an attacker may exploit this vulnerability to cause a denial-of-service (DoS) condition or potentially execute arbitrary code.
Vulnerability Detail
The vulnerability arises from a lack of proper validation in the ice_ptp_release() function of the Kernel's ice driver. When PTP is not initialized, the function fails to handle the release of associated resources correctly. This oversight can be exploited by an attacker to disrupt network connectivity or potentially execute arbitrary code. The impact of this vulnerability depends on the specific context in which the Kernel is deployed and the privileges of the attacker. It is crucial to promptly address this vulnerability to mitigate the risk of exploitation.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
As a temporary workaround, users can disable the ice driver or remove the affected hardware from their system. However, this may result in the loss of network connectivity or the inability to utilize the affected Intel Ethernet devices. It is recommended to apply the official fix by updating the Kernel as soon as possible.
Conclusion
The vulnerability in the Kernel's ice_ptp_release() function poses a risk to network connectivity and system security. It is crucial to update the Linux Kernel to version v5.14.16 or later to address this vulnerability. Promptly applying the official fix will ensure that the ice_ptp_release() function correctly checks for the initialization of PTP, mitigating the risk of exploitation. For further support and assistance with vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability can vary depending on the specific context and privileges of the attacker. It may lead to a denial-of-service (DoS) condition, disruption of network connectivity, or potential execution of arbitrary code.
You can use the Vulert Playground at Vulert Scanner to check if your application or system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
At the time of this report, there are no known public exploits specifically targeting this vulnerability. However, it is crucial to apply the recommended fix promptly to mitigate the risk of potential exploitation.
As a temporary workaround, you can disable the ice driver or remove the affected hardware from your system. However, this may result in the loss of network connectivity or the inability to utilize the affected Intel Ethernet devices. It is recommended to apply the official fix by updating the Kernel as soon as possible.
You can find more information about this vulnerability in the GSD-2021-1002135 entry of the GSD Database maintained by the Cloud Security Alliance. The source link is available at https://github.com/cloudsecurityalliance/gsd-database/blob/main/2021/1002xxx/GSD-2021-1002135.json.
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